The complete solution of the initial-boundary value problem for the integra
ble discrete version of the stimulated Raman scattering system on the semi-
line is constructed by means of the inverse spectral transform. The spectra
l data obey a Riccati time evolution equation which allows for soliton gene
ration out of a medium initially at rest. It is also proved that the constr
uction of the solution at any finite distance actually results in solving a
n algebraic system.